File:The Street railway journal (1896) (14758207921).jpg

Identifier: streetrailwayjo121896newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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in theboiler room is carried on adjustable rollers placed on pedes-tals, bolted down to solid masonry, back of boilers, and atsuch a height above boiler room floor that all valves canbe operated by hand from the floor. The headers from the boilers to the main have long,easy bends, so as to take care of the expansion, and at thesame time retard the speed of the steam as little as possible. side, high or low, can be run independent and condensingor non-condensing, if so desired. The exhaust steam, after leaving the engines, passesthrough a heater into the condenser, or around the conden-ser into the free atmosphere, as the case may be, depend-ing upon whether the station is running condensing or non-condensing. The suction pipe to the condenser is fitted with astrainer, placed inside of the engine room in the basement.This is by-passed, and so arranged that it can easily becleaned. The overflow from the condensers empties intothe river. The feedwater, which is city water, passes through
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May, 1896.) STREET RAILWAY JOURNAL. 279 a meter to the pumps in the boiler room. From here it ispumped first through the primary heaters in the engineroom, where it reaches a temperature of from 125 to 130degs.; thence to the auxihary heater in the boiler room,where the temperature rises to from 200 to 212 degs.The feedwater piping, as will be seen from Fig. 3, is soarranged that any or all primary heaters or the auxiliaryheater can be cut out. The water can therefore pass di-rectly from the primary heaters to the boilers, or it canpass directly through the auxiliary heater to the boilers, or,finally, it can pass directly from the feed pumps to theboilers as may be desired. It must be noted that the plant is so piped that underno circumstances anything hut a partial break down is pos-sible, as all pipes are in duplicate with the exception of themain, which however is, by valves so divided into sectionsthat if anything should happen to one of the .sections, therest can be operated. All

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